<% if @syllabus %>
var checked = $("#principals_for_new_member input:checked").size();
if(checked > 0)
{
    alert('翻页或搜索后将丢失当前选择的用户数据!');
}
$('#principals_for_new_member').html('<%= escape_javascript(find_user_not_in_current_syllabus_by_name(@syllabus)) %>');

<% end %>
var collection = $("#principals_for_new_member").children("#principals").children("label");
collection.css("text-overflow", "ellipsis");
collection.css("white-space", "nowrap");
collection.css("width", "200px");
collection.css("overflow", "hidden");
for(i = 0; i < collection.length; i++) {    //增加悬浮显示
    var label = collection[i];
    var text = $(label).text();
    $(label).attr("title", text);
}